163 replies to this topic

[SlotStox#53]

That's going to be a real powerhouse of a can!! Just love looking at all the original parts in their packaging

[Bill from NH]

 

...been looking for some good contact adhesive ...

Paul, The 3M Super Weatherstrip Adhesive(aka Gorilla Snort) is available in both yellow & black colors if you want to match your glue to black donuts. I've never had a tire failure when using it & I first used it in the early 1970s.

[Pablo]

When I look at all those wheels n gears n axles n bearings, I think of a Mars Rover, or an Arctic Tundra vehicle.  

[dc-65x]

The heart of the motor is the armature. I don't know if what I'm using is exactly "korrect" for a Mura Cukras motor but it's as close as I can get with what I have. For reference I'm using this great story by PdL on the Electric Dreams web site. Here's the link:

 

MURA STORY

 

Here's a quote from the story:

 

"While John Thorp is generally credited to be the first to use electric tack welding of the wires to the commutator tabs, the "Series 2" Mura-Cukras armatures did get this improvement almost immediately. The armature wires were tied at the commutator with fiberglass thread and epoxy was much improved with a vacuum process. This made the motors much more reliable. Now painted in pink....."

 

The armature I'm using has the trademark Mura flat bottom balancing holes, is CCW timed, vacuum process epoxy coated, has thin lamination's and welded commutator wires tied with fiberglass thread. It's a double wind so I'm calling it a double 28 as that's what the Mura ad said was available for the Cukras motor.

 

Here it is in its original, sad, 45 year old condition:

 

 

The commutator wasn't worn and showed no signs of the dreaded "Valley of the Comm"

Taking a super light cut in the comm lathe showed it was out of round. You can see the darker area that wasn't cut in the center of the shiny area that was cut:

 

 

A few more cuts and she's a beauty now:

 

 

In fact, me thinks the entire arm is a beauty now that it's all cleaned and polished

 

 

 

End bell time..........

[SlotStox#53]

Another ressurection from the sad armature files! Looks a real beauty now   Amazing how much some coms need cutting even ones appearing to be un used.

 

"thank the stars for no valley of the com"!

[Champion 507]

WWWOOOWWW

[Dennis David]

Champ it's only an armature, get your hands out where I can see them. LOL

[Old pink can guy]

I have an orginigal Pink can! Not for sale! If you new how too set them up. My main comp Ran Steube motors. We ran 3 clases F1, Can am and coupe. Never let me down. He only one 3 out out of  each race but always TQ ed him. But I was lucky my sponsor would go to the disturbutior and I got too pick all my stuff. 

[Champion 507]

Dennis, what I meant was "wow" for the whole build up to this point, not just the arm. I didn't make that very clear, did I?

[Old pink can guy]

Dough. Yoy had to make sure the Mags were even and the arm was placed in the proper position. Plus a little hard work. Polish the com and sent it too Thropr. Never Let me down!

[Dennis David]

Champ, it is a very nice build, from start to now. I love using original parts. I never see this in RC or even trains

[dc-65x]

Thanks for all the positive feedback on my build. I know it's kind of a crazy build but it's been a lot of fun and I think it might just turn out OK.

 

I'm going to stop with the motor and switch to the body. I haven't been happy with the way the motor has been going (except the arm which turned out great) and I'm using that as an excuse to....BUY MORE TOOLS!

 

My birthday is coming up and I'm going to add a few goodies to my thread "Toys for Retirement".

 

The goodies should be here in a week or so and in the mean time it's time for the 6-wheeler's body.....

[racie35]

So very cool.

[SlotStox#53]

You can never have "Enough" tools ! waits to check out your tools for retirement thread & wonders what sweet pieces will be arriving!

Sorry the motor hasn't been turning out the way you had hoped.

[Champion 507]

Sure wish I could replicate (or even get close) to replicating those Mura drill balancing holes. I know it's been discussed here and it takes a special bit.

 

Aw heck, where's my bench grinder?

 

DENNIS SAID:

"I never see this in RC or even trains".

 

I can't speak for r/c but I've had 2 friends either scratch build steam locomotives in HO or heavily modify them using resistance soldering irons, but it is sure a dieing art form any more. I was going to attempt it, myself, but I realized I had more stuff than I could ever finish, so I'm selling about 95% of my other stuff and keeping slot car. Heck, I can't find the time to do much of it either.

[Rick Moore]

Rick, I thought you might get a laugh out of this thing I built some years back. I went the anglewinder route, but from the onset I was building a “dualie truck”. Couldn’t make up my mind on the body either, so I went with both (each with its own sissy bar). The first time I spun those rear gears was a Zen-kinda moment. This thing is fast and corners like it’s on rails. Scares the heck out of people… at least when they’re not laughing. The drawback is having to true two pairs of rear tires!

 

In any case, I’m sure you’ll have a blast with yours too! Have fun!!

 

Rick / CMF3

 

 

 

[Dennis David]

I was commenting about using period parts.

[Jairus]

I think I can do that with a Champion Turbo!  Hmmmmm......

[SlotStox#53]

Wow Rick love the dual axle anglewinder!!! Truck looks superb, definitely inspiring seeing both of these ideas

[dc-65x]

Cool anglewinder Rick

 

Hmmmmmm......an anglewinder might just be in my future

[Steve Okeefe]

Rick (M),

 

The jackshaft pinion appears to be tapered (or the photo is way distorted), so you could potentially adjust the mesh by sliding the jackshaft assembly side to side...  Very clever, I like it! 

 

Rick (T),

 

Let's see, inline six wheelers, anglewinder six wheelers, what's left? 

 

I think I'd better get something going before I get left out... 

[dc-65x]

Hi Steve,

 

I'd probably opt for a full sidewinder with an old Pittman or something before I'd do an anglewinder.....in case you want to build a Texas 2-Rail 6-Wheeler . Now that would be some motor box!

[SlotStox#53]

Steve and Rick T lots of ideas and may just have to shift future projects around to have a go at one of these lol

[Steve Okeefe]

See what I mean?  This six wheel stuff is contagious 

 

I experimented a bit with a couple of Pittman 700 series motors - the idea was to locate one axle in front and one behind the armature.

 

It might be made to work... except for the magnet (duh!)     Do we really need this pesky magnet?  I mean, it's so old school...

 

Maybe we could just use the force...  

[Rick Moore]

Steve (O)

You're observation is correct (though we will not talk about what here is actually "distorted"...   ), it's an angled 14t 64p big honker of a pinion. After careful calculations, I just took a big WAG at it and this worked (first time, woo-hoo!!). I spaced it with arm spacers until I could set any pair of 37t - 39t gears simply by changing the axle spacers. But the pinion would be pretty easy to move as well.

 

The real shocker for me was finding out this thing didn't drive like a barge.

 

Contagious? Speaking for myself, I think ridiculous behavior just comes naturally...

 

Rick / CMF3